Solved cryptogram
Six is the sum of the numbers that divide it, and such numbers are very thin on the ground.
Mathematics Facts, sourced to On-Line Encyclopedia of Integer Sequences.
Solve it yourself
This fact is a cryptogram here: 71 letters over 19 different ones, graded medium.
Or go to the puzzle’s own page first.
What it means
One plus two plus three is six, and one plus two plus four plus seven plus fourteen is twenty eight. After those the next two are four hundred and ninety six and eight thousand one hundred and twenty eight. Euclid showed how to build such a number from a prime of a special form, and Euler proved that every even one arises that way. Whether any odd perfect number exists has been open for more than two thousand years.
The claim comes from On-Line Encyclopedia of Integer Sequences.
- SourceOn-Line Encyclopedia of Integer Sequences
- CollectionMathematics Facts
- Difficultymedium
- Length71 letters, 19 of them different
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